On Frustration

I don't understand why I play team games. All it results in at the end of the day is massive frustration on my behalf of why people are bad. I don't understand why I bother to emotionally invest myself in people when I know it will lead to frustration. It's like I cling on to some semblance of hope that they will pull through for me and when they don't I just feel screwed. Maybe I have issues and need to just get over it. Only time will tell.